CN114360386A - Flexible cover plate and display device - Google Patents
Flexible cover plate and display device Download PDFInfo
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- CN114360386A CN114360386A CN202210109417.6A CN202210109417A CN114360386A CN 114360386 A CN114360386 A CN 114360386A CN 202210109417 A CN202210109417 A CN 202210109417A CN 114360386 A CN114360386 A CN 114360386A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/14—Protective coatings, e.g. hard coatings
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
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Abstract
The application discloses flexible apron and display device, flexible apron include the supporting layer, the supporting layer is formed with a plurality of portions of holding, the portion of holding is filled with the stress supporting part, the hardness of stress supporting part is greater than the hardness of supporting layer. The utility model provides an including the supporting layer in the flexible apron, be formed with a plurality of portions of holding in the supporting layer, it has the stress supporting part to fill in the portion of holding, because the hardness of stress supporting part is greater than the hardness of supporting layer, consequently when flexible apron receives the impact force, the acceptable stronger impact of stress supporting part to reduce the deformation that flexible apron caused by the impact, for example, can promote the anti ball that falls and fall a performance, better protection display panel, thereby promote display quality.
Description
Technical Field
The application belongs to the technical field of show, especially relates to a flexible apron and display device.
Background
With the development of flexible display technology, OLED (Organic Light-Emitting Diode) display panels have shown great potential in flexible display. From a fixed flexible display screen to a foldable display screen, the display screen has the characteristics of large size and portability. In order to further meet the requirement that the display screen can be conveniently stored or carried when not in use, the flexible display screen capable of being curled is produced.
At present, the flexible display screen capable of being curled is mostly considered to be used in the fields of notebook computers, tablet computers, vehicle-mounted display screens and the like, and due to the use requirement of users for lightening and thinning the flexible display screen capable of being curled, the curling radius needs to be continuously reduced, but the ball-falling and pen-falling performance of the flexible display screen can be reduced after the flexible display screen is lightened and thinned.
Disclosure of Invention
The embodiment of the application provides a flexible cover plate and a display device, and the impact resistance of the flexible cover plate is stronger.
An embodiment of a first aspect of an embodiment of the present application provides a flexible cover plate, which includes a supporting layer, where the supporting layer is formed with a plurality of accommodating portions, and the accommodating portions are filled with stress supporting portions, where hardness of the stress supporting portions is greater than that of the supporting layer.
According to an embodiment of the first aspect of the present application, the receiving portion is formed on one side surface of the support layer.
According to any one of the embodiments of the first aspect of the present application, the support layer includes a first support layer and a second support layer, which are stacked, the accommodating portion includes a first accommodating portion formed on a side of the first support layer facing the second support layer, and the stress supporting portion includes a first stress supporting portion filled in the first accommodating portion;
preferably, the second support layer is bonded with the first support layer through an adhesive layer;
preferably, the total volume of the first stress support is less than or equal to one third of the volume of the first support layer.
According to any one of the embodiments of the first aspect of the present application, the accommodating portion further includes a second accommodating portion formed in the second support layer, and the stress supporting portion further includes a second stress supporting portion filled in the second accommodating portion;
preferably, the second accommodating portion is formed on a side surface of the second support layer facing away from the first support layer, and/or formed on a side surface of the second support layer facing toward the first support layer.
According to any one of the preceding embodiments of the first aspect of the present application, the spacing between adjacent first receiving portions is the same as the spacing between adjacent second receiving portions.
According to any one of the embodiments of the first aspect of the present application, the stress supporting portion and the inner wall of the accommodating portion are fixed by adhesive bonding.
According to any one of the embodiments of the first aspect of the present application, the material of the support layer is colorless and transparent polyimide;
the elastic modulus of the stress supporting part is greater than or equal to 10 Gpa.
According to any one of the preceding embodiments of the first aspect of the present application, the inner wall of the receiving portion is a curved surface.
According to any one of the preceding embodiments of the first aspect of the present application, the support layer further includes a hardened layer formed on a side surface of the support layer away from the accommodating portion.
An embodiment of the second aspect of the present application further provides a display device, including any one of the flexible cover plates provided in the first aspect of the present application, further including a flexible display panel, the flexible cover plate is disposed on one side of the light emitting surface of the flexible display panel.
The utility model provides an including the supporting layer in the flexible apron, be formed with a plurality of portions of holding in the supporting layer, it has the stress supporting part to fill in the portion of holding, because the hardness of stress supporting part is greater than the hardness of supporting layer, consequently when flexible apron receives the impact force, the acceptable stronger impact of stress supporting part to reduce the deformation that flexible apron caused by the impact, for example, can promote the anti ball that falls and fall a performance, better protection display panel, thereby promote display quality.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a flexible cover plate provided in an embodiment of the present application;
fig. 2 is a schematic top view of a first support layer in a flexible cover according to an embodiment of the present disclosure;
fig. 3 to 6 are schematic diagrams illustrating a manufacturing process of a flexible cover plate according to an embodiment of the present application;
FIG. 7 is a schematic structural diagram of another flexible cover provided in the embodiments of the present application;
FIG. 8 is a schematic structural diagram of another flexible cover provided in the embodiments of the present application;
FIG. 9 is a schematic structural diagram of another flexible cover provided in the embodiments of the present application;
FIG. 10 is a schematic structural diagram of another flexible cover provided by an embodiment of the present application;
FIG. 11 is a schematic structural diagram of another flexible cover provided by an embodiment of the present application;
fig. 12 is a schematic structural diagram of another flexible cover plate provided in the embodiment of the present application.
In the drawings:
1-a flexible cover plate; 10-a support layer; 101-a first support layer; 102-a second support layer; 11-a housing; 111-a first housing; 112-a second receptacle; 12-a stress support; 121-a first stress support; 122-a first stress support; (ii) a 13-a hardened layer; 14-colloid; 15-an adhesive layer; 2-a display device; 20-a flexible display panel; 21-a polarizer; 22-back support layer; 23-a metal layer; 24-an optical glue layer; 3-a special-shaped base station; 31-convex structure.
Detailed Description
Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The display device comprises a display panel and a cover plate for protecting the display panel, wherein in the flexible display device, the display panel is a flexible display panel, and the cover plate is a flexible cover plate. The inventor researches and discovers that the flexible cover plate has low rigidity and therefore weak impact resistance, for example, when the flexible cover plate is subjected to a ball-falling pen-falling test, the flexible cover plate has poor impact resistance, so that the flexible display panel is also poor in protection effect, and deformation is easily generated when the flexible display panel is impacted, and the display effect is affected. Based on the research on the above problems, the inventors have provided a flexible cover plate and a display device to improve the impact resistance of the display device.
For better understanding of the present application, the flexible cover sheet 1 and the display device 2 according to an embodiment of the present application will be described in detail below with reference to fig. 1 to 12.
Referring to fig. 1, an embodiment of the present application provides a flexible cover plate 1, including a support layer 10, a plurality of receiving portions 11 formed in the support layer 10, stress supporting portions 12 filled in the receiving portions 11, and a hardness of the stress supporting portions 12 is greater than a hardness of the support layer 10.
The utility model provides a flexible apron 1 includes supporting layer 10 in, be formed with a plurality of accommodation parts 11 in supporting layer 10, it has stress supporting part 12 to fill in the accommodation part 11, because the hardness of stress supporting part 12 is greater than the hardness of supporting layer 10, consequently when flexible apron 1 receives the impact force, stress supporting part 12 can accept stronger impact, in order to reduce the deformation that flexible apron 1 received the impact and cause, for example, can promote the anti ball that falls and fall a pen performance, better protection display panel, thereby promote display quality.
In one possible embodiment, as shown in fig. 1 and 2, the receiving portion 11 is formed on one side surface of the support layer 10.
In the above embodiment, the accommodating portion 11 is formed on one side surface of the support layer 10, and the accommodating portion 11 is a groove formed by recessing the one side surface of the support layer 10 in the inner direction of the support layer 10, so as to provide an accommodating space for the stress supporting portion 12.
In the above embodiment, the support layer 10 is a single layer, and the receiving portion 11 is formed on one surface of the support layer 10, and the hardened layer 13 is formed on the other surface. Since the surface of the supporting layer 10 facing away from the receptacle 11 is a perfectly imperforate, flat surface, the provision of the stiffening layer 13 on the surface of the supporting layer 10 facing away from the receptacle 11 facilitates the manufacture. And the hardness of the hardening layer 13 is higher, so that the surface of the flexible cover plate 1 can be protected, and the occurrence of scratches is reduced. Above-mentioned flexible apron is in the use, flexible apron is located flexible display panel and goes out plain noodles one side, and it is relative with flexible display panel's display surface to be formed with a side surface of holding part 11 in flexible apron's the supporting layer 10, a side surface that deviates from holding part 11 in the supporting layer 10 is located and deviates from flexible display panel one side, because a side surface that deviates from holding part 11 in the supporting layer 10 is intact sclausura's even surface, the roughness on the surface that is provided with holding part in the more flexible apron is higher, set up this surface into more being close to user one side, thereby can promote user experience.
In a possible embodiment, the inner wall of the housing 11 is a cambered surface. Thereby, a smooth transition is achieved, a sharp angle of the stress support 12 formed in the receiving portion 11 is prevented, and adverse effects on the impact resistance of the flexible cover plate 1 when subjected to stress impact are avoided.
The cambered surface can be a hemispherical surface and the like, is convenient to prepare, can also be a cambered surface with gradually changed curvatures of all parts, and is not particularly limited in the application.
In a possible embodiment, the stress support 12 is adhesively fixed to the inner wall of the receptacle 11 by means of a glue 14. The glue 14 has an adhesive function to fix the stress supporting portion 12 and the accommodating portion 11, and has an impact force function to buffer the impact force applied to the flexible cover plate 1, thereby improving the impact resistance of the flexible cover plate 1.
Specifically, the glue 14 may be a liquid Optical Cement (OCR) that facilitates uniform coating of the inside of the receptacle 11. The colloid 14 may be made of optically transparent resin, so as to ensure high light transmittance of the flexible cover plate 1 and avoid affecting the display effect.
Specifically, the colloid 14 is a whole layer covering the inner wall of the accommodating portion 11, so as to improve the fixing effect of the stress supporting portion 12 and the supporting layer 10, and increase the contact area with the supporting layer 10, so that the buffering action area of the supporting layer 10 is larger, and the impact resistance of the flexible cover plate 1 is further improved.
In one possible embodiment, the material of the support layer 10 is colorless transparent polyimide. The elastic modulus of the stress supporting portion 12 is 10Gpa or more. Specifically, the material of the stress supporting portion 12 may be polyimide with an elastic modulus greater than or equal to 10Gpa, or may be a transparent material that satisfies the above requirement for elastic modulus and is not easily broken after bending, and the present application is not limited thereto.
As shown in fig. 3, in preparing the supporting layer 10, the supporting layer 10 having the receiving portion 11 may be formed by applying colorless transparent polyimide on the irregular base 3 having the convex structure.
Wherein, the surface of evagination structure can be the cambered surface to make the inner wall of holding portion 11 be the cambered surface, the surface of evagination structure is the cambered surface simultaneously and is convenient for the peeling off of supporting layer 10 and dysmorphism base station 3, thereby is convenient for prepare and can promote the preparation yield.
As shown in fig. 4, then deviate from one side coating sclerosis layer 13 of holding portion 11 at supporting layer 10, wherein, the material of sclerosis layer 13 can be acrylic acid etc., and sclerosis layer 13 adopts coating process to form in the upper surface of supporting layer 10 (deviating from a side surface of holding portion 11 promptly), and sclerosis layer 13 is frivolous has excellent wear-resisting and anti scratch performance simultaneously concurrently, thereby can play the effect of protection, prevent that the fish tail from appearing in the upper surface of flexible apron 1, in order to avoid the mar to cause the influence to the definition that shows.
The thickness of the hardened layer 13 may be 3 μm to 5 μm to achieve thinning and thinning under the premise of achieving good protection, and the specific thickness of the hardened layer 13 is not particularly limited in this application.
As shown in fig. 5, a glue 14 is then applied to the receiving portion 11 of the support layer 10, and the glue 14 covers the inner wall of the receiving portion 11.
As shown in fig. 6, polyimide with an elastic modulus of 10Gpa or more is then coated on the side of the gel 14 facing away from the support layer 10 and cured to form the stress supporter 12.
In another possible embodiment, as shown in fig. 7, the support layer 10 includes a first support layer 101 and a second support layer 102 which are stacked, the accommodating portion 11 includes a first accommodating portion 111 formed on a side of the first support layer 101 facing the second support layer 102, and the stress supporting portion 12 includes a first stress supporting portion 122 filled in the first accommodating portion 111.
In the above embodiment, the first accommodating portion 111 is filled with the first stress supporting portion 122, and since the hardness of the first stress supporting portion 122 is greater than that of the first supporting layer 101, when the flexible cover plate 1 is subjected to an impact force, the first stress supporting portion 122 can receive a stronger impact, so as to reduce the deformation of the flexible cover plate 1 caused by the impact, and better protect the display panel.
In the above embodiment, the support layer 10 includes two layers, namely the first support layer 101 and the second support layer 102, which are stacked, and the first accommodating portion 111 is formed on one side surface of the first support layer 101 facing the second support layer 102, so that the space of the first accommodating portion 111 can be completely enclosed. The second support layer 102 is disposed on one side of the first support layer 101, so that the stability of the flexible cover 1 can be enhanced, and the mechanical performance of the flexible cover 1 is stronger.
In one possible embodiment, the material of the first supporting layer 101 is colorless transparent polyimide; the thickness is 30 μm to 75 μm. Specifically, the thickness of the first supporting layer 101 may be 30 μm, 31 μm, 32 μm, 35 μm, 40 μm, 45 μm, 51 μm, 68 μm, 75 μm, etc., and the application is not particularly limited, the thickness of the first supporting layer 101 should not be too thin to achieve the supporting effect, and should not be too thick to meet the requirement of the user for thinning, and the first supporting layer 101 within the above thickness range may be selected to achieve the supporting effect and thinning.
In a possible embodiment, the material of the second support layer 102 is the same as that of the first support layer 101, and may be colorless and transparent polyimide; the thickness is 10 μm to 25 μm. Specifically, the thickness of the second support layer 102 may be 10 μm, 11 μm, 12 μm, 15 μm, 18 μm, 20 μm, 21 μm, 24 μm, 25 μm, etc., and the application is not particularly limited, and the thickness of the second support layer 102 is not too thin to achieve the supporting effect, nor too thick, which is not favorable for achieving the lightness and thinness of the flexible cover plate 1. In a possible embodiment, as shown in fig. 7, a side surface of the second support layer 102 facing the first support layer 101 and a side surface of the second support layer 102 facing away from the first support layer 101 are both flat and non-porous surfaces, and at this time, the second support layer 102 can further strengthen the supporting effect of the first support layer 101, so that the flexible cover plate 1 has stronger stability and mechanical performance.
In the use process of the flexible cover plate, the flexible cover plate is located on one side of the light emitting surface of the flexible display panel, the first support layer 101 of the flexible cover plate is located on one side far away from the flexible display panel, and the second support layer 102 is located on one side close to the flexible display panel. First supporting layer 101 is formed with first holding portion 111 therein, and first holding portion 111 intussuseption is filled with first stress supporting part 122, thereby places first supporting layer 101 in the one side of keeping away from flexible display panel and can make first stress supporting part 122 more be close to the upper surface of flexible apron, and first stress supporting part 122 can bear stronger impact to when the upper surface of flexible apron receives the impact, make the protection effect of flexible apron to flexible display panel better.
In one possible embodiment, the second support layer 102 is bonded to the first support layer 101 by the first adhesive layer 15, i.e., the adhesive layer 15. The first adhesive layer 15 and the adhesive layer 15 may be colorless and transparent optical glue to ensure light transmittance of the flexible cover plate 1.
In one possible embodiment, the total volume of the first stress supporter 122 is less than or equal to one third of the volume of the first support layer 101.
In the above embodiment, the first stress supporting portions 122 are uniformly distributed in the first supporting layer 101, and the total volume of the first stress supporting portions 122 in all the first accommodating portions 111 is not more than one third of the total volume of the first supporting layer 101, so as to prevent the curling effect of the flexible cover plate 1 from being affected due to the overlarge total volume of the first stress supporting portions 122, and the total volume of the first stress supporting portions 122 is controlled within the above range, so as to improve the impact resistance of the flexible cover plate 1 while meeting the curling performance of the flexible cover plate 1.
In a possible embodiment, the accommodating portion 11 further includes a second accommodating portion 112 formed on the second support layer 102, and the stress supporting portion 12 further includes a second stress supporting portion 12 filled in the second accommodating portion 112.
Specifically, as shown in fig. 8, the second receiving portion 112 is formed on a side surface of the second support layer 102 facing away from the first support layer 101, and/or, as shown in fig. 9, the second receiving portion 112 is formed on a side surface of the second support layer 102 facing the first support layer 101.
In the above embodiment, the second support layer 102 has a plurality of second receiving portions 112 formed therein, and the second receiving portions 112 are recesses formed by recessing the surface of the second support layer 102 facing away from the first support layer 101 in the direction inward of the second support layer 102, or recesses formed by recessing the surface of the second support layer 102 facing toward the first support layer 101 in the direction inward of the second support layer 102. The second accommodating portion 112 is filled with the second stress supporting portion 12, and since the hardness of the second stress supporting portion 12 is greater than that of the second supporting layer 102, when the flexible cover plate 1 receives an impact force, the second stress supporting portion 12 can receive a stronger impact, so as to reduce the deformation caused by the impact, for example, the ball-drop resistance can be improved, the display panel can be better protected, and the display quality can be improved.
In the use process of the flexible cover plate, the flexible cover plate is located on one side of the light emitting surface of the flexible display panel, the first supporting layer 101 of the flexible cover plate is located on one side far away from the flexible display panel, and the second supporting layer 102 is located on one side close to the flexible display panel. A first accommodating portion 111 is formed on a side surface of the first support layer 101 facing the second support layer 102, a side surface of the first support layer 101 facing away from the second support layer 102 is a flat surface, and a second accommodating portion 112 is formed on a side surface of the second support layer 102 facing away from the first support layer 101. The flexible display panel is therefore placed on the side of the second support layer 102 facing away from the first support layer 101 such that the flat surface side of the first support layer 101 faces the user, thereby providing a better visual experience for the user.
In the above embodiment, a hardened layer 13 is further formed on the surface of one side of the first supporting layer 101 away from the second supporting layer 102, and when the flexible cover plate is in use, the hardened layer 13 is located on one side of the first supporting layer 101 away from the flexible display panel, and the second supporting layer 102 away from the flexible display panel, so that the hardness of the hardened layer 13 is high, the surface of the flexible cover plate 1 can be protected, and the occurrence of scratches is reduced.
Alternatively, a first accommodating portion 111 is formed on a side surface of the first support layer 101 facing the second support layer 102, and a second accommodating portion 112 is formed on a side surface of the second support layer 102 facing the first support layer 101. At this time, the surface of one side of the first support layer 101, which is away from the second support layer 102, and the surface of one side of the second support layer 102, which is away from the first support layer 101, are both flat surfaces, so that the first support layer 101 of the flexible cover plate can be located on the side away from the flexible display panel, and the second support layer 102 is located on the side close to the flexible display panel; the first support layer 101 of the flexible cover plate may also be located at a side close to the flexible display panel, and the second support layer 102 may be located at a side far from the flexible display panel; the present application is not particularly limited. At this moment, the accommodating part in one of the first supporting layer 101 and the second supporting layer 102 close to the flexible display panel is located on one side of one side surface of the flexible cover plate departing from the flexible display panel in the first supporting layer 101 or the second supporting layer 102, so that the impact on the upper surface of the flexible cover plate can be better protected, the deformation of the upper surface caused by the impact is reduced, and the protection effect of the flexible cover plate on the flexible display panel is better. In the above embodiment, the hardened layer 13 is formed on one of the first support layer 101 and the second support layer 102, which is far away from the flexible display panel, and the hardened layer 13 has high hardness, so that the surface of the flexible cover plate 1 can be protected, and the occurrence of scratches can be reduced.
In one possible embodiment, the distance between adjacent first receiving portions 111 is the same as the distance between adjacent second receiving portions 112. So that the adjustment positions of the first stress supporting part 122 on the first supporting layer 101 and the adjustment positions of the second stress supporting part 12 on the second supporting layer 102 are distributed more uniformly.
In a possible embodiment, as shown in fig. 8, an orthographic projection of the first accommodating portion 111 on the hardened layer 13 overlaps with an orthographic projection of the second accommodating portion 112 on the hardened layer 13, so that the superposition of the stress resisting effect of the first stress supporting portion 122 and the second stress supporting portion 12 can be achieved, and the impact resistance of the flexible cover plate 1 is further enhanced while the mechanical performance of the flexible cover plate 1 is enhanced by the second supporting layer 102.
In another possible embodiment, as shown in fig. 9 and 10, the orthographic projection of the first accommodating part 111 on the hardened layer 13 and the orthographic projection of the second accommodating part 112 on the hardened layer 13 are arranged in a staggered manner without overlapping, so that the area of the flexible cover plate 1 with the impact resistance improved by the first stress supporting part 122 and the second stress supporting part 12 is increased, and both flexibility and impact resistance are satisfied.
In another possible embodiment, as shown in fig. 11, the orthographic projection of the first accommodating portion 111 on the hardened layer 13 and the orthographic projection of the second accommodating portion 112 on the hardened layer 13 may also partially overlap, and may also have the effect of increasing the area of the flexible cover plate 1 in which the impact resistance is improved by the first stress supporting portion 122 and the second stress supporting portion 12.
In a possible embodiment, the total volume of the first stress supporter 122 is less than or equal to one third of the volume of the first support layer 101, and the total volume of the second stress supporter 12 is less than or equal to one third of the volume of the second support layer 102.
In the above embodiment, the first stress supporting portions 122 are uniformly distributed in the first supporting layer 101, and the total volume of the first supporting portions in all the first accommodating holes is not more than one third of the total volume of the first supporting layer 101, so as to prevent the curling effect of the flexible cover plate 1 from being affected by the overlarge total volume of the first stress supporting portions 122, and by controlling the total volume of the first stress supporting portions 122 within the above range, the impact resistance of the flexible cover plate 1 is improved while the curling performance of the flexible cover plate 1 is satisfied; the second stress supporting parts 12 are uniformly distributed in the second supporting layer 102, and the total volume of the second supporting parts in all the second accommodating holes is not more than one third of the total volume of the second supporting layer 102, so that the curling effect of the flexible cover plate 1 is prevented from being influenced by the overlarge total volume of the second stress supporting parts 12, the total volume of the second stress supporting parts 12 is controlled within the range, and the impact resistance of the flexible cover plate 1 is improved while the curling performance of the flexible cover plate 1 is met.
In a possible embodiment, the second stress supporting portion 12 and the first stress supporting portion 122 are made of the same material, and the second supporting layer 102 and the first supporting layer 101 are made of the same material, so that the stretching effect of the first supporting layer 101 and the stretching effect of the second supporting layer 102 are the same, and the curling or bending effect of the flexible cover plate 1 is better.
In a possible embodiment, the inner walls of the first and second receiving portions 111 and 112 are curved surfaces, so as to achieve smooth transition, prevent the first stress supporting portion 122 formed in the first receiving portion 111 and the second stress supporting portion 12 formed in the second receiving portion 112 from forming a sharp angle, and avoid adverse effects on the impact resistance of the flexible cover plate 1 when subjected to stress impact.
The application also provides a display device 2, which comprises any one of the flexible cover plates 1 provided in the above embodiments of the application, and further comprises a flexible display panel 20, wherein the flexible cover plate 1 is arranged on one side of the light emitting surface of the flexible display panel 20.
The display device 2 further includes a polarizer 21 disposed on a side of the flexible display panel 20 facing the flexible cover plate 1, an optical adhesive layer 24 for adhering the flexible cover plate 1 and the polarizer 21, wherein the polarizer 21 is a circular polarizer 21, when the ambient light enters the flexible display panel 20 through the circular polarizer 21, after passing through the circular polarizer 21, the circularly polarized light is changed into circularly polarized light, and after the circularly polarized light is reflected by the metal layer 23 in the flexible display panel 20, the rotating direction is changed, and thus absorbed by the circular polarizer 21, the polarizer 21 helps to prevent ambient light from being reflected by the metal layer 23 in the flexible display panel 20 and then emitted through the display surface, thereby help promoting display quality, simultaneously under non-display state, prevent to take place because the external light that metal level 23 reflects jets out by the display surface and the phenomenon of display panel light leak appears, promote display panel's user experience.
The display device 2 provided by the application further comprises a back support layer 22 and a patterned metal layer 23, the back support layer 22 is arranged on one side, away from the light emitting surface, of the flexible display panel 20, the patterned metal layer 23 can improve the recovery characteristic of the display device 2 after bending, the patterned metal layer 23 deforms in the bending process to disperse stress generated during bending, and the patterned metal layer 23 drives the display panel to recover to be flat in the recovery process; the back support layer 22 is disposed between the flexible display panel 20 and the patterned metal layer 23, and may serve to buffer, support and protect the flexible display panel 20.
In accordance with the embodiments of the present invention as set forth above, these embodiments are not exhaustive and do not limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the application and its practical application, to thereby enable others skilled in the art to best utilize the application and its various modifications as are suited to the particular use contemplated. The application is limited only by the claims and their full scope and equivalents.
Claims (10)
1. The flexible cover plate is characterized by comprising a supporting layer, wherein a plurality of accommodating parts are formed in the supporting layer, stress supporting parts are filled in the accommodating parts, and the hardness of the stress supporting parts is greater than that of the supporting layer.
2. The flexible cover sheet of claim 1 wherein the receiving portion is formed on one side surface of the support layer.
3. The flexible cover sheet of claim 1, wherein the support layer comprises a first support layer and a second support layer arranged in a stacked manner, the receiving portion comprises a first receiving portion formed on a side of the first support layer facing the second support layer, and the stress supporting portion comprises a first stress supporting portion filled in the first receiving portion;
preferably, the second support layer is bonded with the first support layer through an adhesive layer;
preferably, the total volume of the first stress support is less than or equal to one third of the volume of the first support layer.
4. The flexible cover sheet of claim 3, wherein the receiving portion further comprises a second receiving portion formed in the second support layer, and the stress supporting portion further comprises a second stress supporting portion filled in the second receiving portion;
preferably, the second accommodating portion is formed on a side surface of the second support layer facing away from the first support layer, and/or formed on a side surface of the second support layer facing toward the first support layer.
5. The flexible cover sheet of claim 4 wherein the spacing between adjacent first receptacles is the same as the spacing between adjacent second receptacles.
6. The flexible cover sheet of claim 1, wherein the stress support portion is fixed to the inner wall of the receptacle portion by adhesive bonding.
7. The flexible cover sheet according to claim 1, wherein the material of the support layer is colorless transparent polyimide;
the elastic modulus of the stress supporting part is greater than or equal to 10 Gpa.
8. The flexible cover sheet of claim 1, wherein the inner walls of the receptacles are curved.
9. The flexible cover sheet of claim 1 further comprising a stiffening layer formed on a side surface of the support layer distal from the receiving portion.
10. A display device, comprising the flexible cover plate according to any one of claims 1 to 9, and further comprising a flexible display panel, wherein the flexible cover plate is disposed on a light exit surface side of the flexible display panel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210109417.6A CN114360386B (en) | 2022-01-28 | 2022-01-28 | Flexible cover plate and display device |
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| CN202210109417.6A CN114360386B (en) | 2022-01-28 | 2022-01-28 | Flexible cover plate and display device |
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| CN114360386A true CN114360386A (en) | 2022-04-15 |
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Cited By (2)
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| CN115050263A (en) * | 2022-06-15 | 2022-09-13 | 昆山国显光电有限公司 | Flexible cover plate, display panel and display device |
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